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Product Detailed Parameters
- Description：LOW DUTY LCD SEGMENT DRIVER FOR
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR),Cut Tape (CT)
- Display Type：LCD
- Configuration：276 Segment
- Interface：SPI
- Digits or Characters：-
- Voltage - Supply：2.7V ~ 6V
- Operating Temperature：-40°C ~ 105°C
- Mounting Type：Surface Mount
- Package / Case：80-LQFP
- Supplier Device Package：80-VQFP (14x14)
- Current - Supply：85 µA
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The BU91520KV-ME2 is an automotive-grade LCD segment driver supporting 1/4 and 1/3 duty cycles. It drives up to 276 segments in 1/4 duty or 207 segments in 1/3 duty mode. The device operates with an interface voltage of 2.7V to 6.0V and supports TTL input levels for direct MCU connection. It features a 3-wire serial interface, six general-purpose outputs, and a keyboard scan function for up to 30 keys. The operating temperature range extends from -40°C to +105°C.
Feature Summary
- Supports high-contrast VA LCD driving with selectable bias settings
- Integrates LED backlight control via PWM outputs without flicker
- Includes built-in keyboard scanning to reduce PCB wiring complexity
Applications
- Automotive instrument cluster displays
- Vehicle information system screens
- Center console control panels
Procurement Notes
Verify the specific suffix ME2 against the manufacturer's current datasheet to confirm package details and RoHS compliance status. Ensure the ordering quantity aligns with the standard taping packaging requirements specified by ROHM Semiconductor. Cross-reference the AEC-Q100 qualification data if functional safety analysis is required for the target application.
Selection Notes
Select this component when designing automotive displays requiring high segment counts and robust environmental tolerance. It is suitable for applications needing direct TTL-level interfacing with microcontrollers across various supply voltages. Consider its integrated keypad scanning capability if reducing external logic components is a priority.
Part Context
This part belongs to ROHM's lineup of low-duty LCD drivers designed specifically for automotive environments. It complements other power management and display solution ICs within the company's portfolio, focusing on reliability and integration for vehicle interior electronics.
Replacement Considerations
The BU91520KV-M is listed as an alias for this component. Verify pin compatibility and electrical specifications before substituting with other generic LCD drivers, as duty cycle support and interface protocols may differ.
